head to head
vs
HearthstonevsMagic: The Gathering - Duels of the Planeswalkers 2012
Hearthstone leans Variance (Grand Arena); Magic: The Gathering - Duels of the Planeswalkers 2012 leans Optimization (Systems & Chaos).
HearthstoneMagic: The Gathering - Duels of the Planeswalkers 2012
Axis by axis
Execution1 vs 0
Hearthstone leans harder on execution: Clicks only, no mechanical skill
Reads6 vs 4
Hearthstone leans harder on reads: Human opponents bluff and adapt mid-match
Variance7 vs 6
Hearthstone leans harder on variance: Draw RNG and discover effects swing games
Optimization7 vs 7
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.